Why can't I run this game anymore?

I’ve got a gtx970, i5 4690 @ 3.5mhz and 8gb of ram, well above minimum requirements for the game. The main menu works just fine, but pressing continue makes the game load for 5+ minutes and then I am greeted by a black screen and my ui frozen. Before the update the game stuttered constantly, I’ve been playing on the lowest settings and even did ini tweaks to make the game run better to no avail. Can anyone explain why the game won’t work for me?